The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1988
Filed:
Dec. 31, 1985
Brian E Blair, Raleigh, NC (US);
Mark H Weiss, Raleigh, NC (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A method for controlling a processor in a data processing system so that multiple events are serviced on a single interrupt level. On the occurrence of a first interrupt request the processor is forced to run the routine that services the interrupt in a background mode. This is accomplished by immediately clearing the interrupt source, thus permitting the processor to accept new interrupt requests on the same level. On the occurrence of a second interrupt request, at the same level, the processor branches from executing the first interrupt routine on the background mode to service the second interrupt request on an interrupt level or foreground mode.